锻压技术

汽车后地板工艺参数优化

英文标题：Optimization of process parameters for panel lower back of automobile

作者：杜晨宇张光胜张威付三令

分类号：TG386

出版年,卷(期):页码：2014,39(8):24-29

摘要：

汽车覆盖件冲压成形过程中，有诸多工艺参数对零件的成形质量有着重要的影响。以某车型后地板为例，采用正交试验的方法研究压边力、冲压速度、模具间隙、摩擦系数4个工艺参数对最大变薄率和最大增厚率的影响大小。试验表明，各因素对目标的影响程度各不相同。对最大变薄率的影响由强到弱依次为摩擦系数、压边力、模具间隙、冲压速度；对最大增厚率来说，压边力影响最大，摩擦系数次之，模具间隙和冲压速度对最大增厚率影响不大。在正交试验的基础上对4个工艺参数进行优化，通过对优化后工艺方案进行有限元模拟可以发现，最大变薄率和最大增厚率都得到了有效控制，并且零件的成形质量较好。

During automobile panel stamping forming process, there are many process parameters which have great effect on the forming quality of parts. Exampled by panel lower back of a certain automotive body, the method of orthogonal experiment was used to research the effects of stamping process parameters such as blank holder force, stamping speed, friction coefficient and die clearance on the maximum thinning rate and the maximum thickening rate. The results show that the impact of each factor on the objectives is not identical. The effects on the maximum thinning rate from strong to weak serially are friction coefficient, blank holder force, die clearance and stamping speed. For the maximum thickening rate, blank holder force is of the greatest impact, friction coefficient is of the secondary one, while die clearance and stamping speed have only a little effect. Based on the orthogonal experiment, the four process parameters were optimized. Through the results of finite element simulation based on the optimized process, it can be found that each of the maximum thinning rate and the maximum thickening rate have been effectively controlled, and better forming quality of parts is got.

基金项目：

科技部科技型中小企业技术创新基金项目（12C26213403392）

杜晨宇（1989-），男，硕士研究生

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